MdePkg/Library/BaseSynchronizationLib/X64/InterlockedIncrement.nasm

   1 ;------------------------------------------------------------------------------
   2 ;
   3 ; Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
   4 ; SPDX-License-Identifier: BSD-2-Clause-Patent
   5 ;
   6 ; Module Name:
   7 ;
   8 ;   InterlockedIncrement.Asm
   9 ;
  10 ; Abstract:
  11 ;
  12 ;   InterlockedIncrement function
  13 ;
  14 ; Notes:
  15 ;
  16 ;------------------------------------------------------------------------------
  17
  18     DEFAULT REL
  19     SECTION .text
  20
  21 ;------------------------------------------------------------------------------
  22 ; UINT32
  23 ; EFIAPI
  24 ; InternalSyncIncrement (
  25 ;   IN      volatile UINT32           *Value
  26 ;   );
  27 ;------------------------------------------------------------------------------
  28 global ASM_PFX(InternalSyncIncrement)
  29 ASM_PFX(InternalSyncIncrement):
  30     mov       eax, 1
  31     lock xadd dword [rcx], eax
  32     inc       eax
  33     ret
  34